I think it does? I go into a home improvement store, grab a dimmable bulb on the warmer side, and screw it in. That's pretty much the sum total of my dealing with LED bulbs.

The problem is that the "dimmable" LEDs I have aren't actually dimmable, they just get flickery.

The article has a similar sentiment: it's hard to translate from what the box says to how it'll actually perform in the real world.

Because EU banned the free market. The ideal would have been a slow transition where LEDs would have had to compete with bulbs.

Like the others I want to buy an LED where the visible light cannot be meassured differently from a normal one, and with the guarantee that I can return it for a full refund if it fails before the 20k hours are up.

The free market will never fix that, because there is no profit in making it easy for you, nor in offering an unlimited return.